I find it hard to explain clearly since I am so new to it, but I thought I would like to share it with fellow pooners. I was always frustrated that I was usually a one-shot-on-goal guy who would basically turn over and fall asleep after. Then I was doing a lot of reading on the matter and experimenting with different SPs during my sessions. As most guys know, during sex there is a point where the ejaculate is poised to come out and you can feel it basically at the base of your scrotum. In trying to prolong the period between feelings of ejaculation and actual ejaculation, the penis head fully expands and the fluid travels its length. If you focus on it and apply a steady rhythm, you can slow the movement of the fluid as it travels the length of the penis. Now that only controls the ejaculation, and at times I've been able to allow the ejaculation to go through but stop it part of the way, in much the same way as being able to stop urinating. The 2nd part of the puzzle is preventing that exhausted feeling after ejaculation. I found that the feeling stems from an actual orgasm. I think that in general, men are single-orgasmic (as opposed to women who can have multiple orgasms). I also found that it is orgasm that prevents the penis from becoming hard again, not ejaculation - so you can ejaculate and still remain hard for more. Also, orgasm and ejaculation do not have to be tied together. This means you can ejaculate and not have an orgasm, but to have an orgasm you usually need to ejaculate (even if there is no fluid left - ie: muscles go through their usual spasms anyway). The orgasm can result from a mind-body connection. My own experience is that when the mind says "completely let go" at the point of ejaculation, orgasm is experienced while ejaculation occurs, and the usual flacidity returns to the penis as well as exhaustion to the body.
My one and only success in knowingly practicing this occurred in a session with a SP/GF. The result was ejaculating on her breasts, staying hard, having more intercourse, then ejaculating in her mouth, staying hard, then having more intercourse, then having an orgasm in her pussy. I would have had a 2nd success at an MP but the SP saw that I ejaculated and prevented me from going further even though I was still fully erect (she said "you came already that's it, or you have to pay again" - I was not happy with that). I wish all my sessions could be like the first one, but more often than not, my performance is below an acceptable standard and disappointing to me.
Now all this may seem obvious and stupid to you the reader, but for a guy as desensitized to my own body functions as I am, it was a revolution.
I'd like to hear your thoughts on the matter. If you have something to contribute, I would likely find it worthwhile.